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thandavanadhi October 31, 2006 06:29

VOF
 
Hi,

Does the latest version of CFX has Volume of fluid method for fluid surface tracking. Can anyone comment on this aspect

Thanks in advance

Camilo Costa October 31, 2006 09:56

Re: VOF
 
This is a problem very important, because if you want tranking a interface bettween gas and liquid you need use this tecnic.

Robin October 31, 2006 10:04

Re: VOF
 
Yes, you can track a free surface in any current version of CFX using homogenous multiphase with free surface turned on. See the tutorials for details.

-Robin

Bak_Flow October 31, 2006 11:38

Re: VOF
 
Hi Thandavanadhi,

just a clarification. The term interface tracking usually refers to methods which actually move the mesh: "Boundary fitted grids are used, and they are re-adjusted each time the free surface is used" Ferziger and Peric 2ed, p. 356

VOF methods fall in the category of Interface CAPTURING methods.

CFX has the later...and it is very good. But not the former.

Tell us more about your application and you may get some specific tips.

Regards,

Bak_Flow


thandavanadhi November 10, 2006 23:22

Re: VOF
 
Dear Bak_flow

I want to model dam break problem in CFX. I would like to use VOF in CFX. In the multiphase simulation this option is not coming.. What method CFX uses .?.

Thank you


Robin November 11, 2006 13:20

Re: VOF
 
This is essentially what you get when you pick two fluids (i.e. Eularian-Eularian multiphase). There is a free surface tutorial (flow over a bump). Give it a try.

-Robin


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